Improvement in pressure regulatgrs for fluids



H. s. YOUNG & w. H. BERGER.-

Pressure Regulators for Fluids.

No.150,386. PatentedAprii28,1874.

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HARMON S. YOUNG AND \VILLIAM H. BERGER, OF DANVILLE, PA.

IMPRQVEMENT IN PRESSURE REGULATORS FOR FLUIDS.

Specification forming part of Letters Patent No. 159,386, dated April28, 1874; application filed April 2, 1874.

To all whom it may concern I Be it known that we, HARMON S. YOUNG andWILLIAM H. BERGER, of Danville, in the county of Montour and State ofPennsylvania, have invented a new and Improved Pressure- Regulator forFluids; and we do hereby declare that the following is a full, clear,and exact description of the same, reference being had to theaccompanying drawing forming a part of this specification, in which isrepre sented a sectional elevation of the regulator.

The invention relates to an improved device for regulating the pressureof gas, steam, air, water, or other fluids conveyed in tubes or pipesfrom one point to another. It consists in the construction andarrangement of valves,

their containing case or shell, and an adjusting device, as hereinafterfully described.

The case or shell A of the regulator has an inlet-orifice at B anddischarge-orifice at O,the latter com municating with the valve-chamberabove and below the valve-seats by means of pipe D. The valves E and Fare formed on, or attached to, the same stem G, and both seat downward,or in the same direction. The valve E has an elongated base, a, withvertical sides, which works steam or air tight in acorrespondinglyshaped part of the shell A. The under side of the baseaFi-. 0., thehorizontal part immediately adjacent to and surrounding thestem-constitutes the only part of the valve E. on which pressure can beexerted by the gas or other fluid when acting from below. The top areaor surface of valve E is, however, greater, and also exceeds the area ofvalve F on either its upper or under side. The gas or other fluid passesinto the pipe D only through the lower valve-orifice, since the stem Gis not allowed to rise sufficiently to lift the base a above its seat.It is, therefore, clear that if the back pressure of the fluid in pipe Dsufficiently exceeds the forward pressure at the inlet B, the valve 13will be pressed downward, or seated, since the pressure on the top ofvalve E will exceed that on the under side of base a by as much as itsarea is greater, the valve F being mainly a negative element in respectto such pressure. The said degree of pressure which is necessary to seatthe lower valve is regulated by a spring, I, and nut H. The former,which is preferably of spiral form, encircles the threaded lower end ofthe valvestem G, and presses upward against the nut working thereon, anddownward against a cross-bar that joins the ends of rods to a, attachedto the shellA. The lower valve is raised off its seat by screwing thenut down on the stem.

What we claim ise In a pressure-regulator for fluids, the combination,with the case or shell A, provided with inlet and discharge orifices B Oand tube 1), arranged relative to the valve-seats as set forth, of thevalves E and F top area or surface of the former exceeding that of itselongated base a, the spring I, and adjusting-nut H, all arranged tooperate as shown and described.

HARMON s. YOUNG. WILLIAM H.

lVitnesses O. H. OSTRANDER, PETER BALDY, Jr.

on stem G, the

